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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 35 |
| 4 | 131 |
| 5 | 347 |
| 6 | 767 |
| 7 | 1511 |
| 8 | 2744 |
| 9 | 4686 |
| 10 | 7623 |
| 11 | 11919 |
| 12 | 18029 |
| 13 | 26513 |
| 14 | 38051 |
| 15 | 53459 |
| 16 | 73706 |
| 17 | 99932 |
| 18 | 133467 |
| 19 | 175851 |
| 20 | 228855 |
| 21 | 294503 |
| 22 | 375095 |
| 23 | 473231 |
| 24 | 591836 |
| 25 | 734186 |
| 26 | 903935 |
| 27 | 1105143 |
| 28 | 1342305 |
| 29 | 1620381 |
| 30 | 1944827 |
[0,3,35,131,347,767,1511,2744,4686,7623,11919, 18029,26513,38051,53459,73706,99932,133467,175851, 228855,294503,375095,473231,591836,734186,903935, 1105143,1342305,1620381,1944827] |